DD281810A5 - Verfahren zur herstellung von polyethylenglycocarbaminaten - Google Patents
Verfahren zur herstellung von polyethylenglycocarbaminaten Download PDFInfo
- Publication number
- DD281810A5 DD281810A5 DD88318188A DD31818888A DD281810A5 DD 281810 A5 DD281810 A5 DD 281810A5 DD 88318188 A DD88318188 A DD 88318188A DD 31818888 A DD31818888 A DD 31818888A DD 281810 A5 DD281810 A5 DD 281810A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- formula
- hydrogen
- radical
- compounds
- group
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C235/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms
- C07C235/02—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton
- C07C235/04—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated
- C07C235/08—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by oxygen atoms having carbon atoms of carboxamide groups bound to acyclic carbon atoms and singly-bound oxygen atoms bound to the same carbon skeleton the carbon skeleton being acyclic and saturated having the nitrogen atom of at least one of the carboxamide groups bound to an acyclic carbon atom of a hydrocarbon radical substituted by singly-bound oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
- C08G65/337—Polymers modified by chemical after-treatment with organic compounds containing other elements
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/28—Drugs for disorders of the nervous system for treating neurodegenerative disorders of the central nervous system, e.g. nootropic agents, cognition enhancers, drugs for treating Alzheimer's disease or other forms of dementia
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P39/00—General protective or antinoxious agents
- A61P39/02—Antidotes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/32—Polymers modified by chemical after-treatment
- C08G65/329—Polymers modified by chemical after-treatment with organic compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T436/00—Chemistry: analytical and immunological testing
- Y10T436/24—Nuclear magnetic resonance, electron spin resonance or other spin effects or mass spectrometry
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Pharmacology & Pharmacy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Neurology (AREA)
- Neurosurgery (AREA)
- Biomedical Technology (AREA)
- Diabetes (AREA)
- Hospice & Palliative Care (AREA)
- Hematology (AREA)
- Psychiatry (AREA)
- Toxicology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Medicinal Preparation (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH279487 | 1987-07-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
DD281810A5 true DD281810A5 (de) | 1990-08-22 |
Family
ID=4241735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DD88318188A DD281810A5 (de) | 1987-07-23 | 1988-07-21 | Verfahren zur herstellung von polyethylenglycocarbaminaten |
Country Status (21)
Country | Link |
---|---|
US (3) | US5185368A (no) |
EP (1) | EP0300969B1 (no) |
JP (1) | JPH0813795B2 (no) |
KR (1) | KR890002250A (no) |
AT (1) | ATE117328T1 (no) |
AU (1) | AU617677B2 (no) |
DD (1) | DD281810A5 (no) |
DE (1) | DE3852793D1 (no) |
DK (1) | DK410988A (no) |
ES (1) | ES2066794T3 (no) |
FI (1) | FI93351C (no) |
HU (1) | HU201517B (no) |
IE (1) | IE65550B1 (no) |
IL (1) | IL87184A (no) |
MX (1) | MX12394A (no) |
NO (1) | NO171684C (no) |
NZ (1) | NZ225506A (no) |
PH (1) | PH26779A (no) |
PT (1) | PT88060B (no) |
YU (1) | YU142188A (no) |
ZA (1) | ZA885336B (no) |
Families Citing this family (68)
Publication number | Priority date | Publication date | Assignee | Title |
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DE3875296D1 (de) * | 1987-07-23 | 1992-11-19 | Ciba Geigy Ag | Verfahren zur selektiven n-acylierung von amino-hydroxamsaeurederivaten und darin verwendete ausgangsstoffe. |
MX12394A (es) * | 1987-07-23 | 1993-12-01 | Ciba Geigy Ag | Procedimiento par la obtencion de carbamatos de polietilenglicol. |
EP0346281B1 (de) * | 1988-06-08 | 1992-06-17 | Ciba-Geigy Ag | Carbamoylierte Hydroxamsäurederivate und Verfahren zu ihrer Herstellung |
US5324844A (en) * | 1989-04-19 | 1994-06-28 | Enzon, Inc. | Active carbonates of polyalkylene oxides for modification of polypeptides |
US5122614A (en) * | 1989-04-19 | 1992-06-16 | Enzon, Inc. | Active carbonates of polyalkylene oxides for modification of polypeptides |
US6221367B1 (en) | 1992-06-15 | 2001-04-24 | Emisphere Technologies, Inc. | Active agent transport systems |
US6331318B1 (en) | 1994-09-30 | 2001-12-18 | Emisphere Technologies Inc. | Carbon-substituted diketopiperazine delivery systems |
US5693338A (en) | 1994-09-29 | 1997-12-02 | Emisphere Technologies, Inc. | Diketopiperazine-based delivery systems |
US5714167A (en) | 1992-06-15 | 1998-02-03 | Emisphere Technologies, Inc. | Active agent transport systems |
US5541155A (en) | 1994-04-22 | 1996-07-30 | Emisphere Technologies, Inc. | Acids and acid salts and their use in delivery systems |
US5443841A (en) | 1992-06-15 | 1995-08-22 | Emisphere Technologies, Inc. | Proteinoid microspheres and methods for preparation and use thereof |
US6099856A (en) | 1992-06-15 | 2000-08-08 | Emisphere Technologies, Inc. | Active agent transport systems |
US5578323A (en) | 1992-06-15 | 1996-11-26 | Emisphere Technologies, Inc. | Proteinoid carriers and methods for preparation and use thereof |
US5629020A (en) | 1994-04-22 | 1997-05-13 | Emisphere Technologies, Inc. | Modified amino acids for drug delivery |
US5447728A (en) * | 1992-06-15 | 1995-09-05 | Emisphere Technologies, Inc. | Desferrioxamine oral delivery system |
US5310539A (en) * | 1991-04-15 | 1994-05-10 | Board Of Regents, The University Of Texas System | Melanin-based agents for image enhancement |
US5254724A (en) * | 1991-10-30 | 1993-10-19 | University Of Florida Research Foundation, Inc. | Method for synthesis of desferrioxamine B, analogs and homologs thereof |
GB9211779D0 (en) * | 1992-06-03 | 1992-07-15 | Ciba Geigy Ag | Amine salts |
US5792451A (en) | 1994-03-02 | 1998-08-11 | Emisphere Technologies, Inc. | Oral drug delivery compositions and methods |
US5811127A (en) | 1992-06-15 | 1998-09-22 | Emisphere Technologies, Inc. | Desferrioxamine oral delivery system |
US5489491A (en) * | 1992-07-22 | 1996-02-06 | Golovin; Milton N. | Curable polymer precursors for solid electrolytes |
US5401516A (en) | 1992-12-21 | 1995-03-28 | Emisphere Technologies, Inc. | Modified hydrolyzed vegetable protein microspheres and methods for preparation and use thereof |
US6610329B2 (en) * | 1993-04-22 | 2003-08-26 | Emisphere Technologies Inc. | Compositions for the delivery of antigens |
US5709861A (en) | 1993-04-22 | 1998-01-20 | Emisphere Technologies, Inc. | Compositions for the delivery of antigens |
US5766633A (en) | 1993-04-22 | 1998-06-16 | Emisphere Technologies, Inc. | Oral drug delivery compositions and methods |
US5958457A (en) | 1993-04-22 | 1999-09-28 | Emisphere Technologies, Inc. | Compositions for the delivery of antigens |
US5643957A (en) | 1993-04-22 | 1997-07-01 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US5605672A (en) * | 1993-06-09 | 1997-02-25 | The General Hospital Corporation | Blood pool imaging composition and method of its use |
IL106064A (en) * | 1993-06-18 | 1997-11-20 | Yissum Res Dev Co | Gallium complexes for the treatment of free radical-induced diseases |
US5618838A (en) * | 1993-06-18 | 1997-04-08 | Yissum Research Development Company Of The Hebrew University Of Jerusalem | Gallium complexes for the treatment of free radical-induced diseases |
US6001347A (en) | 1995-03-31 | 1999-12-14 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
BR9604880A (pt) | 1995-03-31 | 1998-05-19 | Emisphere Tech Inc | Composto composição forma de unidade de dosagem métodos para administração de um agente biologicamente ativo para preparar uma composição para administração de um agente ativo e para preparar um composto e composição farmacológica |
US5650386A (en) | 1995-03-31 | 1997-07-22 | Emisphere Technologies, Inc. | Compositions for oral delivery of active agents |
US5989539A (en) | 1995-03-31 | 1999-11-23 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US5965121A (en) | 1995-03-31 | 1999-10-12 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US6090958A (en) | 1995-03-31 | 2000-07-18 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US5866536A (en) | 1995-03-31 | 1999-02-02 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US5820881A (en) | 1995-04-28 | 1998-10-13 | Emisphere Technologies, Inc. | Microspheres of diamide-dicarboxylic acids |
US5750147A (en) | 1995-06-07 | 1998-05-12 | Emisphere Technologies, Inc. | Method of solubilizing and encapsulating itraconazole |
US6051258A (en) | 1995-06-07 | 2000-04-18 | Emisphere Technologies, Inc. | Proteinoid emulsions and methods for preparation and use thereof |
US5667806A (en) | 1995-06-07 | 1997-09-16 | Emisphere Technologies, Inc. | Spray drying method and apparatus |
US5824345A (en) | 1995-06-07 | 1998-10-20 | Emisphere Technologies, Inc. | Fragrances and flavorants |
WO1997010197A1 (en) | 1995-09-11 | 1997-03-20 | Emisphere Technologies, Inc. | METHOD FOR PREPARING φ-AMINOALKANOIC ACID DERIVATIVES FROM CYCLOALKANONES |
US7026116B1 (en) * | 1996-04-04 | 2006-04-11 | Bio-Rad Laboratories, Inc. | Polymorphisms in the region of the human hemochromatosis gene |
US6140305A (en) * | 1996-04-04 | 2000-10-31 | Bio-Rad Laboratories, Inc. | Hereditary hemochromatosis gene products |
US6849399B1 (en) | 1996-05-23 | 2005-02-01 | Bio-Rad Laboratories, Inc. | Methods and compositions for diagnosis and treatment of iron misregulation diseases |
WO1997047288A1 (en) | 1996-06-14 | 1997-12-18 | Emisphere Technologies, Inc. | Microencapsulated fragrances and method for preparation |
US5804688A (en) | 1997-02-07 | 1998-09-08 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US6060513A (en) | 1997-02-07 | 2000-05-09 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US6358504B1 (en) | 1997-02-07 | 2002-03-19 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US5879681A (en) | 1997-02-07 | 1999-03-09 | Emisphere Technolgies Inc. | Compounds and compositions for delivering active agents |
US5990166A (en) | 1997-02-07 | 1999-11-23 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US5876710A (en) | 1997-02-07 | 1999-03-02 | Emisphere Technologies Inc. | Compounds and compositions for delivering active agents |
US5939381A (en) | 1997-02-07 | 1999-08-17 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US6313088B1 (en) | 1997-02-07 | 2001-11-06 | Emisphere Technologies, Inc. | 8-[(2-hydroxy-4-methoxy benzoyl) amino]-octanoic acid compositions for delivering active agents |
US5863944A (en) | 1997-04-30 | 1999-01-26 | Emisphere Technologies, Inc. | Compounds and compositions for delivering active agents |
US5962710A (en) | 1997-05-09 | 1999-10-05 | Emisphere Technologies, Inc. | Method of preparing salicyloylamino acids |
DE69835519T2 (de) | 1997-06-13 | 2007-04-05 | Bio-Rad Laboratories, Inc., Hercules | Verfahren und zusammensetzungen für die diagnose und die behandlung von krankheiten, die mit eisenüberschuss oder eisenmangel assoziiert sind. |
NZ512581A (en) * | 1999-01-08 | 2002-12-20 | Univ Virginia Commonwealth | Polymeric delivery agents comprising a polymer conjugated to a modified amino acid and derivatives thereof |
US6767741B1 (en) | 1999-08-27 | 2004-07-27 | Invitrogen Corporation | Metal binding compounds and their use in cell culture medium compositions |
US6648864B2 (en) * | 2000-12-12 | 2003-11-18 | The Procter & Gamble Company | Array of disposable absorbent article configurations and merchandise display system for identifying disposable absorbent article configurations for wearers |
WO2003018665A1 (en) | 2001-08-22 | 2003-03-06 | Bioartificial Gel Technologies Inc. | Process for the preparation of activated polyethylene glycols |
US7351787B2 (en) * | 2004-03-05 | 2008-04-01 | Bioartificial Gel Technologies, Inc. | Process for the preparation of activated polyethylene glycols |
US8454934B2 (en) * | 2006-05-25 | 2013-06-04 | Canadian Blood Services | High molecular weight chelation structure |
DE102007008655A1 (de) * | 2007-02-20 | 2008-08-21 | Henkel Ag & Co. Kgaa | Siderophor-Metall-Komplexe als Bleichkatalysatoren |
CA2756924A1 (en) * | 2009-03-26 | 2010-09-30 | Warsaw Orthopedic, Inc. | Methods of identifying potential components for targeted drug delivery compositions |
US11033630B2 (en) * | 2016-02-11 | 2021-06-15 | Mordechai Chevion | Method and pharmaceutical composition for treatment of neurodegeneration |
CN115109045A (zh) * | 2022-07-14 | 2022-09-27 | 大连大学 | 一种生物基杂环单体及其均聚酯的制备方法 |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1163337B (de) * | 1960-10-11 | 1964-02-20 | Ciba Geigy | Verfahren zur Herstellung von Trihydroxamsaeuren |
US3471476A (en) * | 1964-05-18 | 1969-10-07 | Tino Gaeumann | Trihydroxamic acids |
US3634407A (en) * | 1969-06-19 | 1972-01-11 | Ciba Geigy Corp | Heavy metal complexes of trihydroxamic acids |
US4612122A (en) * | 1981-06-29 | 1986-09-16 | Clara Ambrus | Removing heavy metal ions from blood |
US4419365A (en) * | 1981-12-21 | 1983-12-06 | Ciba-Geigy Corporation | Method of treating Alzheimer's disease |
US4671901A (en) * | 1984-01-26 | 1987-06-09 | Oral-D | Orally effective ion chelators |
US4684482A (en) * | 1984-01-26 | 1987-08-04 | Oral-D (L.P.) | Orally effective ion chelators |
US4613616A (en) * | 1984-07-20 | 1986-09-23 | Research Corporation | Polymeric iron chelators |
DE3579164D1 (de) * | 1984-12-19 | 1990-09-13 | Ciba Geigy Ag | Neue kohlensaeureester. |
US4637929A (en) * | 1985-01-04 | 1987-01-20 | Salutar, Inc. | Ferrioxamine-paramagnetic contrast agents for MR imaging, composition, apparatus and use |
US4758422A (en) * | 1985-01-04 | 1988-07-19 | Salutar Inc. | Ferrioxamine paramagnetic contrast agents for MR imaging |
US5089644A (en) * | 1985-01-04 | 1992-02-18 | Salutar Inc. | Preparation of oxamine complexes |
US4835269A (en) * | 1985-11-11 | 1989-05-30 | Ceskoslovenska Akademie Ved | Silane reagents containing a complexon group |
ATE90879T1 (de) * | 1985-11-18 | 1993-07-15 | Access Pharma Inc | Polychelierende stoffe fuer abbildung- und spektralerhoehung (und spektrale verschiebung). |
US4940811A (en) * | 1986-12-09 | 1990-07-10 | Ciba-Geigy Corporation | N,N-disubstituted ureas and processes for their manufacture |
DE3875296D1 (de) * | 1987-07-23 | 1992-11-19 | Ciba Geigy Ag | Verfahren zur selektiven n-acylierung von amino-hydroxamsaeurederivaten und darin verwendete ausgangsstoffe. |
MX12394A (es) * | 1987-07-23 | 1993-12-01 | Ciba Geigy Ag | Procedimiento par la obtencion de carbamatos de polietilenglicol. |
ATE98631T1 (de) * | 1988-01-20 | 1994-01-15 | Ciba Geigy Ag | Verfahren zur herstellung von komplexverbindungen. |
GB8808305D0 (en) * | 1988-04-08 | 1988-05-11 | Nycomed As | Compositions |
US4999445A (en) * | 1988-06-10 | 1991-03-12 | The Regents Of The University Of California | Contrast agents for magnetic resonance imaging of the small intestine and hepatobiliary system |
IL91047A (en) * | 1989-07-19 | 1993-06-10 | Yissum Res Dev Co | Zinc complexes for the treatment of free radical- induced diseases |
-
1988
- 1988-06-22 MX MX1239488A patent/MX12394A/es unknown
- 1988-07-15 ES ES88810484T patent/ES2066794T3/es not_active Expired - Lifetime
- 1988-07-15 EP EP88810484A patent/EP0300969B1/de not_active Expired - Lifetime
- 1988-07-15 DE DE3852793T patent/DE3852793D1/de not_active Expired - Fee Related
- 1988-07-15 AT AT88810484T patent/ATE117328T1/de not_active IP Right Cessation
- 1988-07-20 US US07/221,860 patent/US5185368A/en not_active Expired - Fee Related
- 1988-07-21 PT PT88060A patent/PT88060B/pt not_active IP Right Cessation
- 1988-07-21 YU YU01421/88A patent/YU142188A/xx unknown
- 1988-07-21 NZ NZ225506A patent/NZ225506A/en unknown
- 1988-07-21 IL IL87184A patent/IL87184A/xx not_active IP Right Cessation
- 1988-07-21 DD DD88318188A patent/DD281810A5/de not_active IP Right Cessation
- 1988-07-21 NO NO883246A patent/NO171684C/no unknown
- 1988-07-22 IE IE224988A patent/IE65550B1/en not_active IP Right Cessation
- 1988-07-22 DK DK410988A patent/DK410988A/da not_active Application Discontinuation
- 1988-07-22 ZA ZA885336A patent/ZA885336B/xx unknown
- 1988-07-22 PH PH37261A patent/PH26779A/en unknown
- 1988-07-22 FI FI883470A patent/FI93351C/fi not_active IP Right Cessation
- 1988-07-22 KR KR1019880009192A patent/KR890002250A/ko active IP Right Grant
- 1988-07-22 AU AU19290/88A patent/AU617677B2/en not_active Ceased
- 1988-07-22 JP JP63181976A patent/JPH0813795B2/ja not_active Expired - Lifetime
- 1988-07-22 HU HU883885A patent/HU201517B/hu not_active IP Right Cessation
-
1992
- 1992-10-27 US US07/967,097 patent/US5328992A/en not_active Expired - Fee Related
-
1994
- 1994-04-08 US US08/224,926 patent/US5424057A/en not_active Expired - Fee Related
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